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 * Copyright 2008 by Sun Microsystems, Inc.
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 * OpenOffice.org - a multi-platform office productivity suite
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 * $RCSfile: viewcontactofe3dlathe.cxx,v $
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"

#include <svx/sdr/contact/viewcontactofe3dlathe.hxx>
#include <svx/lathe3d.hxx>
#include <drawinglayer/primitive3d/sdrlatheprimitive3d.hxx>
#include <svx/sdr/primitive2d/sdrattributecreator.hxx>
#include <svx/sdr/primitive3d/sdrattributecreator3d.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace sdr
{
    namespace contact
    {
        ViewContactOfE3dLathe::ViewContactOfE3dLathe(E3dLatheObj& rLathe)
        :	ViewContactOfE3d(rLathe)
        {
        }

        ViewContactOfE3dLathe::~ViewContactOfE3dLathe()
        {
        }

        drawinglayer::primitive3d::Primitive3DSequence ViewContactOfE3dLathe::createViewIndependentPrimitive3DSequence() const
        {
            drawinglayer::primitive3d::Primitive3DSequence xRetval;
            const SfxItemSet& rItemSet = GetE3dLatheObj().GetMergedItemSet();
            drawinglayer::attribute::SdrLineFillShadowAttribute* pAttribute = drawinglayer::primitive2d::createNewSdrLineFillShadowAttribute(rItemSet, false);

            // for 3D Objects, always create a primitive even when not visible. This is necessary ATM
            // since e.g. chart geometries rely on the occupied space of non-visible objects
            if(!pAttribute)
            {
                pAttribute = new drawinglayer::attribute::SdrLineFillShadowAttribute(
                    impCreateFallbackLineAttribute(basegfx::BColor(0.0, 1.0, 0.0)),
                    0, 0, 0, 0);
            }

            // get extrude geometry
            const basegfx::B2DPolyPolygon aPolyPolygon(GetE3dLatheObj().GetPolyPoly2D());

            // get 3D Object Attributes
            drawinglayer::attribute::Sdr3DObjectAttribute* pSdr3DObjectAttribute = drawinglayer::primitive2d::createNewSdr3DObjectAttribute(rItemSet);

            // calculate texture size. Use the polygon length of the longest polygon for 
            // height and the rotated radius for width (using polygon center) to get a good 
            // texture mapping
            const sal_uInt32 nPolygonCount(aPolyPolygon.count());
            double fPolygonMaxLength(0.0);
            
            for(sal_uInt32 a(0); a < nPolygonCount; a++)
            {
                const basegfx::B2DPolygon aCandidate(aPolyPolygon.getB2DPolygon(a));
                const double fPolygonLength(basegfx::tools::getLength(aCandidate));
                fPolygonMaxLength = std::max(fPolygonMaxLength, fPolygonLength);
            }

            const basegfx::B2DRange aPolyPolygonRange(basegfx::tools::getRange(aPolyPolygon));
            const basegfx::B2DVector aTextureSize(
                F_PI * fabs(aPolyPolygonRange.getCenter().getX()), // PI * d
                fPolygonMaxLength);

            // get more data
            const sal_uInt32 nHorizontalSegments(GetE3dLatheObj().GetHorizontalSegments());
            const sal_uInt32 nVerticalSegments(GetE3dLatheObj().GetVerticalSegments());
            const double fDiagonal((double)GetE3dLatheObj().GetPercentDiagonal() / 100.0);
            const double fBackScale((double)GetE3dLatheObj().GetBackScale() / 100.0);
            const double fRotation(((double)GetE3dLatheObj().GetEndAngle() / 1800.0) * F_PI);
            const bool bSmoothNormals(GetE3dLatheObj().GetSmoothNormals()); // Plane itself
            const bool bSmoothLids(GetE3dLatheObj().GetSmoothLids()); // Front/back
            const bool bCharacterMode(GetE3dLatheObj().GetCharacterMode());
            const bool bCloseFront(GetE3dLatheObj().GetCloseFront());
            const bool bCloseBack(GetE3dLatheObj().GetCloseBack());

            // create primitive and add
            const basegfx::B3DHomMatrix aWorldTransform;
            const drawinglayer::primitive3d::Primitive3DReference xReference(new drawinglayer::primitive3d::SdrLathePrimitive3D(
                aWorldTransform, aTextureSize, *pAttribute, *pSdr3DObjectAttribute,
                aPolyPolygon, nHorizontalSegments, nVerticalSegments,
                fDiagonal, fBackScale, fRotation,
                bSmoothNormals, true, bSmoothLids, bCharacterMode, bCloseFront, bCloseBack));
            xRetval = drawinglayer::primitive3d::Primitive3DSequence(&xReference, 1);

            // delete 3D Object Attributes
            delete pSdr3DObjectAttribute;
            delete pAttribute;

            return xRetval;
        }
    } // end of namespace contact
} // end of namespace sdr

//////////////////////////////////////////////////////////////////////////////
// eof